三峡大坝会减小东海的上升流和生产力吗?——敬复王保栋、孙霞两位指教  

Would the Three Gorges Dam Reduce the Upwelling and Productivity in the East China Sea?——Reply to Wang and Sun's Comments

作　　者：陈镇东[1] 

机构地区：[1]台湾中山大学海洋地质及化学研究所,中国台湾高雄80424

出　　处：《海洋科学进展》2008年第1期109-111,共3页Advances in Marine Science

基　　金：NSC95-2611-M-110-001;NSC95-2621-Z-110-005

摘　　要：2000年笔者利用很简单的一维稳态箱式模型,指出若三峡大坝减少了流入东海的淡水量,则将减少东海陆棚边缘涌升的黑潮次表层水。由于黑潮次表层水饱含营养盐,因此若涌升速率降低了,涌升至东海大陆架的营养盐也就跟着降低,从而影响生物生产力及渔获。王、孙二位提出了不同的看法,并正确地指出了一维稳态箱式模型过度简化所导致的若干问题。然而,王、孙二位似乎对大陆架上之浮力效应原理有所误解,因而误以为浮力效应原理与箱式模型所得推论相反。From a simple one-dimensional steady-state box model （Geophys. Res. Lett. , 2000, 27（3）： 381-383）, I pointed out that any reduction in the discharge from the Changjiang River would likely diminish the upwelling of the nutrient-rich subsurface Kuroshio waters, and hence, reduce productivity in the East China Sea. Wang and Sun made the claim that such an approach is flawed in terms of both mathematical rigor and observational evidence. It is not clear, however, whether Wang correctly treated the East China Sea as an open system because his hydrodynamic point of view should not have violated the mass balance principle which is the basis of the box model. As for observational evidence, all of us will have to wait.

关 键 词：三峡大坝 浮力效应 上升流 东海 生产力 

分 类 号：P731[天文地球—海洋科学]